JPH0620585B2 - Casting model and its manufacturing method - Google Patents
Casting model and its manufacturing methodInfo
- Publication number
- JPH0620585B2 JPH0620585B2 JP60095856A JP9585685A JPH0620585B2 JP H0620585 B2 JPH0620585 B2 JP H0620585B2 JP 60095856 A JP60095856 A JP 60095856A JP 9585685 A JP9585685 A JP 9585685A JP H0620585 B2 JPH0620585 B2 JP H0620585B2
- Authority
- JP
- Japan
- Prior art keywords
- casting model
- parts
- model
- coating film
- casting
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Landscapes
- Mold Materials And Core Materials (AREA)
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
Description
【発明の詳細な説明】 〔発明の目的〕 （産業上の利用分野） この発明は、鋳造用模型とその製法に関するものであ
る。DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial field of application) [0001] The present invention relates to a casting model and its manufacturing method.
（従来の技術） 一般に鋳造用模型、例えば主型または中子を製作するた
めの模型は、木製、合成樹脂製または金属製が使用され
ているものであるが、絶えず鋳物を砂との接触によって
模型の表面が摩耗してへこんだ状態となり、その結果そ
の模型によっね製造される鋳物も同様にへこんだ状態に
なり、形状不良な寸法不良の発生の原因となっていた。
これらの模型の寿命は、模型の材質や形状により異なる
ものであるが、例えば、樹脂型が約２００〜３００ショ
ット、樹脂型が約１０，０００ショット〜１５，０００
ショット、金型が矢３０，０００〜５０，０００ショッ
ト程度である。(Prior Art) Generally, a casting model, for example, a model for producing a main mold or a core, is made of wood, synthetic resin, or metal, but the casting is constantly contacted with sand. The surface of the model is worn and dented, and as a result, the casting produced by the model is also dented, which is a cause of defective shape and dimensional defects.
The life of these models varies depending on the material and shape of the model. For example, the resin mold has about 200 to 300 shots, and the resin mold has about 10,000 shots to 15,000.
The shot and die are about 30,000 to 50,000 shots.
従来、これらの模型の寿命を延ばすために、合成樹脂製
の基体表面に金属溶射層および金属粉を含有した塗料層
を積層形成した鋳造用模型並びにその製法として、ネガ
型の表面に金属粉を含有した塗料を塗布し、その塗料の
表面に金属溶射層を形成した後、流動体（合成樹脂）を
注型固化させ、その後抜型する鋳造用模型の製法（特開
昭59-107744 号公報）が知られている。Conventionally, in order to extend the life of these models, a casting model in which a metal sprayed layer and a paint layer containing a metal powder are laminated and formed on the surface of a synthetic resin substrate, and as a manufacturing method thereof, metal powder is coated on the surface of a negative mold. A method for producing a casting model in which the contained paint is applied, a metal sprayed layer is formed on the surface of the paint, a fluid (synthetic resin) is cast and solidified, and then the mold is removed (JP-A-59-107744). It has been known.
しかし、この鋳造用模型は、基体の表面が多くの金属粉
を含有した塗料層で形成されているため、その金属粉が
鋳物砂中に含まれる水分や、その塗料に含まれている溶
剤と反応して変質し、その結果その鋳造用模型が膨張ま
たは欠落して、鋳物の形状不良や寸法不良の発生の原因
となるものであり、その鋳造用模型の製法は、ネガ型の
表面に塗料を塗布し、その塗料の表面に金属溶射層を形
成させる製法であるので、ネガ型の凹部に塗布および金
属溶射をすることになり、均一な塗膜および金属溶射層
を得ることが困難であるばかりか、塗布および金属溶射
の２工程が必要となるものである。However, in this casting model, the surface of the base body is formed of a paint layer containing a large amount of metal powder, so that the metal powder contains water contained in foundry sand and a solvent contained in the paint. It reacts and deteriorates, and as a result, the casting model expands or drops, which causes defective shape and dimensional defects of the casting.The manufacturing method of the casting model is to paint on the surface of the negative mold. It is a manufacturing method in which a metal sprayed layer is formed on the surface of the paint by applying the above method, and therefore coating and metal spraying are performed on the concave portion of the negative mold, and it is difficult to obtain a uniform coating film and a metal sprayed layer. In addition, two steps of coating and metal spraying are required.
（発明が解決しようとする問題点） この発明は、このような問題点を解決しようとしたもの
で、寿命の長い鋳造用模型を得ることおよびその鋳造用
模型を容易に得ることを目的としたものである。(Problems to be Solved by the Invention) The present invention is intended to solve such problems, and an object thereof is to obtain a casting model having a long life and to easily obtain the casting model. It is a thing.
（問題点を解決するための手段） この発明の構成は、鋳造用模型の一部または全部の表層
部に、セラミック粉末と合成樹脂を成分にしたシンナー
の混合物にその重量比 100部に対し硬化剤を10部、硬化
促進剤を４部を混合した材料により10〜 200μｍの塗膜
を形成したことを特徴とする鋳造用模型および鋳造用模
型の基体を脱脂し、前記模型の一部または全部の表層部
に、セラミック粉末と合成樹脂を主成分にしたシンナー
の混合物にその重量比 100部に対し硬化剤を10部、硬化
促進剤を４部を混合した材料により10〜 200μｍの塗膜
を形成し、前記塗膜された模型を50〜70℃で乾燥させる
ことを特徴とする鋳造用模型の製法である。(Means for Solving Problems) The constitution of the present invention is that a part or all of the surface layer of a casting model is cured to a mixture of ceramic powder and a thinner containing synthetic resin as a weight ratio of 100 parts. A casting model and a casting model substrate characterized by forming a coating film of 10 to 200 μm with a material obtained by mixing 10 parts of an agent and 4 parts of a curing accelerator, and a part or all of the model. On the surface layer, a 10-200 μm coating film is made by mixing 10 parts by weight of curing agent and 4 parts by weight of curing accelerator with 100 parts by weight of a mixture of thinner and ceramic powder as main components. It is a process for producing a casting model, which comprises forming and coating the coated model at 50 to 70 ° C.
この発明に係る鋳造用模型は上記のように構成されてい
るため、その塗膜において剥離現象が発生しにくいもの
である。Since the casting model according to the present invention is configured as described above, the peeling phenomenon is unlikely to occur in the coating film.
また、この発明に係る鋳造用模型の製法は上記のように
形成されているため、剥離現象の発生しにくい塗膜を短
時間に形成しやすいものである。Further, since the casting model manufacturing method according to the present invention is formed as described above, it is easy to form a coating film in which peeling phenomenon does not easily occur in a short time.
（実施例） この発明の鋳造用模型の実施例を図面に基づいて説明す
る。(Example) The Example of the casting model of this invention is described based on drawing.
第１図に示すように、この発明の鋳造用模型１はプレー
ト２に製品部３，押湯部４および湯道部５をそれぞれ起
立固着したエポキシ樹脂を主成分とした鋳造用模型１の
基体６表層部７に、ウレタン樹脂およびセラミック（Al
2O3）粉末を主成分とした塗膜８を約２０〜４０μｍ固
着形成したものであり、その鋳造用模型１の製法は、ま
ずエポキシ樹脂を主成分とした鋳造用模型の基体６を製
作し、その基体６を脱脂した後、その基体６を約５０℃
に加熱し、その加熱された基体６の表層部７に、ウレタ
ン樹脂、セラミック（Al2O3）粉末、顔料およびシンナ
ーの混合物を重量比１００部に対して硬化剤を１０部、
硬化促進剤を４部それぞれ混合撹拌して調合した塗料
を、エアースプレーガンにより約２０〜４０μｍの塗膜
８を形成し、塗膜８を形成した後その鋳造用模型１を約
５０〜７０℃に保持して乾燥させたものである。なおこ
の実施例のように鋳造用模型の基体の材質が塗膜の材質
と異なるように形成される場合におけるこの塗膜の厚み
は、特に限定されるものではないが、１０μｍ未満であ
ると耐摩耗性が期待できず、２００μｍを越えると基体
から剥離しやすくなるものである。As shown in FIG. 1, the casting model 1 of the present invention is a base of the casting model 1 mainly composed of an epoxy resin in which a product part 3, a riser part 4 and a runner part 5 are uprightly fixed to a plate 2. 6 On the surface layer 7, urethane resin and ceramic (Al
2 O 3 ) A coating film 8 containing powder as a main component is adhered and formed to a thickness of about 20 to 40 μm. The casting model 1 is manufactured by first manufacturing a base 6 of a casting model containing an epoxy resin as a main component. Then, after degreasing the substrate 6, the substrate 6 is heated to about 50 ° C.
And a mixture of urethane resin, ceramic (Al 2 O 3 ) powder, pigment and thinner is added to the surface layer portion 7 of the heated substrate 6 at a weight ratio of 100 parts by weight, and a curing agent at 10 parts by weight,
The paint prepared by mixing and stirring 4 parts of each curing accelerator is used to form a coating film 8 of about 20 to 40 μm by an air spray gun, and after the coating film 8 is formed, the casting model 1 is set to about 50 to 70 ° C. It was held at and dried. The thickness of the coating film in the case where the material of the casting model substrate is formed to be different from that of the coating film as in this embodiment is not particularly limited, but if the thickness is less than 10 μm, Abrasivity cannot be expected, and if it exceeds 200 μm, it tends to peel off from the substrate.
次に、この発明の鋳造用模型と従来の鋳造用模型との高
圧造型機における摩耗量の比較を第２図に基づいて説明
する。この発明の鋳造用模型は、上記実施例と同様に、
エポキシ樹脂を主成分とした鋳造用模型の基体表層部
に、ウレタン樹脂およびセラミック（Al2O3）粉末を主
成分とした塗膜を約２０〜４０μｍ固着形成したもので
あり、従来の鋳造用模型は、エポキシ樹脂を主成分とし
た鋳造用模型と普通鋳鉄製の鋳造用模型である。第２図
に示すように、エポキシ樹脂を主成分とした鋳造用模型
は、３，０００ショットで摩耗量が約９０μｍに達して
いるのに対し、この発明の鋳造用模型は、約２０μｍの
摩耗量で留まっているのみである。Next, a comparison of the amount of wear in the high-pressure molding machine between the casting model of the present invention and the conventional casting model will be described with reference to FIG. The casting model of the present invention is similar to the above embodiment,
It is a casting model containing epoxy resin as a main component, and a coating film containing urethane resin and ceramic (Al 2 O 3 ) powder as a main component is fixedly formed on the surface layer of the substrate by about 20 to 40 μm. The models are a casting model mainly made of epoxy resin and a casting model made of ordinary cast iron. As shown in FIG. 2, the wear amount of the casting model containing epoxy resin as the main component reached about 90 μm after 3,000 shots, whereas the casting model of the present invention had a wear amount of about 20 μm. It only remains in volume.
この発明に係る鋳造用模型は、鋳造用模型の一部または
全部の表層部に、セラミック粉末と合成樹脂を成分にし
たシンナーの混合物にその重量比 100部に対し硬化剤を
10部、硬化促進剤を４部を混合した材料により10〜 200
μｍの塗膜を形成したため、その塗膜において剥離現象
が発生しにくいものである。The casting model according to the present invention comprises a mixture of ceramic powder and a thinner containing synthetic resin as a curing agent for 100 parts by weight of the surface layer of a part or all of the casting model.
10 to 200 depending on the material that mixes 10 parts and 4 parts of curing accelerator
Since the coating film having a thickness of μm is formed, the peeling phenomenon is unlikely to occur in the coating film.
また、この発明に係る鋳造用模型の製法は鋳造用模型の
基体を脱脂し、前記模型の一部または全部の表層部に、
セラミック粉末と合成樹脂を成分にしたシンナーの混合
物にその重量比 100部に対し硬化剤を10部、硬化促進剤
を４部を混合した材料により10〜 200μｍの塗膜を形成
し、前記塗膜された模型を50〜70℃で乾燥させるもので
あるため、剥離現象の発生しにくい塗膜を短時間に形成
しやすいものである。Further, in the method for manufacturing a casting model according to the present invention, the base of the casting model is degreased, and a part or all of the surface layer of the model is
A mixture of ceramic powder and a thinner containing synthetic resin as a component is mixed with 10 parts of a curing agent and 4 parts of a curing accelerator with respect to a weight ratio of 100 parts to form a 10 to 200 μm coating film. Since the prepared model is dried at 50 to 70 ° C, it is easy to form a coating film in which peeling phenomenon does not easily occur in a short time.
図面はこの発明の実施例を示すもので、第１図は縦断面
図、第２図はこの発明と従来との鋳造用模型の摩耗量の
比較を表したクラフである。 １……鋳造用模型 ２……プレート ３……製品部 ４……押湯部 ５……湯道部 ６……基体 ７……表層部 ８……塗膜The drawings show an embodiment of the present invention. FIG. 1 is a longitudinal sectional view, and FIG. 2 is a kraft showing a comparison of the wear amounts of the present invention and a conventional casting model. 1 ... Casting model 2 ... Plate 3 ... Product section 4 ... Riser section 5 ... Runner section 6 ... Substrate 7 ... Surface layer section 8 ... Coating film
Claims (2)
セラミック粉末と合成樹脂を主成分にしたシンナーの混
合物にその重量比 100部に対し硬化剤を10部、硬化促進
剤を４部を混合した材料により10〜 200μｍの塗膜を形
成したこと特徴とする鋳造用模型。1. A surface layer part of all or part of a casting model,
A coating film having a thickness of 10 to 200 μm was formed from a material in which a mixture of ceramic powder and a thinner containing synthetic resin as a main component was mixed with 10 parts of a curing agent and 4 parts of a curing accelerator with respect to a weight ratio of 100 parts. A casting model to be used.
部または全部の表層部に、セラミック粉末と合成樹脂を
主成分にしたシンナーの混合物にその重量比 100部に対
し硬化剤を10部、硬化促進剤を４部を混合した材料によ
り10〜 200μｍの塗膜を形成し、前記塗膜された模型を
50〜70℃で乾燥させることを特徴とする鋳造用模型の製
法。2. A substrate for a casting model is degreased, and a part or all of the surface layer of the model is coated with a mixture of ceramic powder and a thinner containing a synthetic resin as a main component and a curing agent for a weight ratio of 100 parts. A coating film having a thickness of 10 to 200 μm is formed from a material in which 10 parts and 4 parts of a curing accelerator are mixed.
A method for producing a casting model, which is characterized by drying at 50 to 70 ° C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60095856A JPH0620585B2 (en) | 1985-05-04 | 1985-05-04 | Casting model and its manufacturing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60095856A JPH0620585B2 (en) | 1985-05-04 | 1985-05-04 | Casting model and its manufacturing method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61253141A JPS61253141A (en) | 1986-11-11 |
| JPH0620585B2 true JPH0620585B2 (en) | 1994-03-23 |
Family
ID=14149009
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60095856A Expired - Lifetime JPH0620585B2 (en) | 1985-05-04 | 1985-05-04 | Casting model and its manufacturing method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0620585B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104148612B (en) * | 2014-08-25 | 2017-01-18 | 陕西法士特汽车传动集团有限责任公司 | Feeder head coating structure and treatment method of aluminum alloy low-pressure cast |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5197534A (en) * | 1975-02-25 | 1976-08-27 | CHUZOYO MOKEI |
-
1985
- 1985-05-04 JP JP60095856A patent/JPH0620585B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS61253141A (en) | 1986-11-11 |
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